 /*******************************************************************************
  * Copyright (c) 2003, 2006 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.core.runtime;

 /**
  * An extension delta represents changes to the extension registry.
  * <p>
  * This interface can be used without OSGi running.
  * </p><p>
  * This interface is not intended to be implemented by clients.
  * </p>
  * @since 3.0
  */
 public interface IExtensionDelta {
     /**
      * Delta kind constant indicating that an extension has been added to an
      * extension point.
      * @see IExtensionDelta#getKind()
      */
     public int ADDED = 1;
     /**
      * Delta kind constant indicating that an extension has been removed from an
      * extension point.
      * @see IExtensionDelta#getKind()
      */
     public int REMOVED = 2;

     /**
      * The kind of this extension delta.
      *
      * @return the kind of change this delta represents
      * @see #ADDED
      * @see #REMOVED
      */
     public int getKind();

     /**
      * Returns the affected extension.
      *
      * @return the affected extension
      */
     public IExtension getExtension();

     /**
      * Returns the affected extension point.
      *
      * @return the affected extension point
      */
     public IExtensionPoint getExtensionPoint();
 }

